QAM and VSB signal equalizers (equalizer for equalizing QAM and VSB signals)

摘要

The present invention relates to a QAM and a signal equalizer, wherein the equalizer of the present invention includes a feedforward filter unit (150); A delay unit 152; A first multiplexer 154; Digital filter 156; A second multiplexer 158; A complex multiplier 160; A signal determination unit 162; A training signal generator 164; A third multiplexer 166; A tap coefficient computing unit 168; And the digital phase-locked loop 170. According to the present invention, by implementing the feed-forward filter unit using the modified complex filtering algorithm, the number of finite impulse response filters can be reduced by a factor of four, Can be reduced.